"They are…huge," Re'Kha was able to sense the sheer size of the two Sha in the auction house. She noticed their approach and was shocked when they assumed their true forms. The sheer density of Ghost Qi they erupted with presented themselves as sharp blank spaces in her Wind Qi perception.
And, upon seeing the auctioneer lady behead the suspicious individuals, she heaved a sigh in relief, "She took action immediately. As expected of someone from the Royal Clan."
Similarly, small teams of Harmonisers entered the room of the suspicious people that had left the auction house early, capturing them immediately, using cuffs from Metal Qi. This way, they were unable to escape.
But, no sooner were they captured did the suspicious people die immediately. It didn't seem as if they had committed suicide voluntarily. But, the moment they were captured, something within their bodies seemed to have been triggered, causing their deaths.